Occurs when the communication object first enters the closing state.
event EventHandler Closing
This event occurs when the communication object first begins to transition from the Opened state into the Closed state, immediately after either the Close or BeginClose method is invoked.
Supported in: 4.6, 4.5, 4, 3.5, 3.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Portable Class Library
Supported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8